概念地图是一种用于支持知识构建及知识共享的方法。通过概念地图，可以有效地创建知识，将不同用户及专家的知识以概念实体与概念关系的形式组织，以图形化的形式加以表示，来支持地学模型建模。基于概念地图的地学模型建模过程包括系统模型描述、用户模型定义、模型建造、模型解释与转换以及CASE生成几部分。随后，详细讨论了模型支持系统的应用特点，基于概念地图的空间模型建模的环境和工作流程。最后，利用永定河的水利工程等背景资料，建立了小清河分洪区背景信息的概念地图模型，利用建立的概念地图模型，在可视化建模环境下，建立了永定河洪水模拟模型。对洪水模拟结果和流域的社会经济统计数据进行叠加分析，得到了令人满意的的洪水灾情评估结果。

The main role of map is confined to representation of various kinds of decision schemata and appraisal results. But it almost does no good to the understanding and definition of problems. The concept map is a new method that can support the knowledge derivation and knowledge sharing. Through the concept map method the new knowledge can be effectively obtained. The experiential knowledge of different user and expert can be organized through the concept entity and concept relation and represented visually as map, thus support the geo-model construction. The Geo-model construction process based on concept map has 5 steps: Geo-model description, Geo-model definition, model construction, transformation from Geo-model to computational model, and CASE generation. Then we discuss in detail the characteristic of the model supporting system and the visual model construction environment. Finally the background data, such as the water engineering distribution and spatial data, of the Yongdinghe Watershed is used to support the construction of Concept Map model of the Xiaoqinghe floodplain, on which the flood simulation model of the Yongdinghe River and the Xiaoqinghe floodplain is constructed. The flood simulation result is overlaid with social and economic data to evaluate the flood disaster loss and the results is satisfactory and encouraging.